The final layer is often panels of loose-weave or sheer fabric hanging in soft drapes to the floor.

WSJ: Sheer Curtains, Solar Shades Are Popular Window Treatments

The floor was made of some soft material to prevent injury in case of a fall.

NEWYORKER: Town of Cats

In the room-sized installation, where the skin-coloured floor, ceiling and matrix of columns are all made of silky Lycra tulle, you stumble, clutch at the soft columns and finally tumble into the squishy floor.

ECONOMIST: Brazilian art

Extra rice demand from China could put a floor under global rice prices, which have been soft due to buoyant supply.

WSJ: China Seeks to Calm Anxiety Over Rice